Nipple



FIG. 1 is a perspective view of a nipple showing my new design;

FIG. 2 is a side elevation view of the nipple of FIG. 1;

FIG. 3 is a top view of the nipple of FIG. 1;

FIG. 4 is bottom view of the nipple of FIG. 1; and,

FIG. 5 is a side elevation view along line 5—5 of FIG. 3. 

The ornamental design for the nipple, as shown and described. 